Gemini 2.5 Flash Preview vs Gemini 2.5 Flash Preview (thinking)
Compare Gemini 2.5 Flash Preview and Gemini 2.5 Flash Preview (thinking), both from Google AI, context windows of 1.0M vs 1.0M, tested across 18 shared challenges.
Our Verdict
Gemini 2.5 Flash Preview
Gemini 2.5 Flash Preview (thinking)
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Gemini 2.5 Flash Preview is 5.8x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Gemini 2.5 Flash Preview
Input
$0.15
1.2× cheaper
Output
$0.60
5.8× cheaper
Gemini 2.5 Flash Preview (thinking)
Input
$0.17
Output
$3.50
Gemini 2.5 Flash Preview is cheaper on both — 1.2× input, 5.8× output
Writing DNA
Style Comparison
Similarity
88%
Gemini 2.5 Flash Preview uses 8.8x more headings
Gemini 2.5 Flash Preview
Gemini 2.5 Flash Preview (thinking)
51%Vocabulary53%
15wSentence Length14w
0.70Hedging0.38
4.1Bold4.4
3.3Lists4.1
0.00Emoji0.00
0.09Headings0.00
0.24Transitions0.24
Based on 12 + 7 text responses
Research
What we learned reading every model
FAQ
